How to Change Java Version in Windows 10: A Step-by-Step Guide

Changing the Java version on Windows 10 can seem like a daunting task, but it’s actually quite straightforward. By following a few simple steps, you can switch to the desired Java version without any hassle. This guide will walk you through the process step-by-step. Whether you’re a developer needing a specific version or just someone looking to update, this tutorial will have you up and running in no time.

How to Change Java Version in Windows 10

In this step-by-step guide, you’ll learn how to change the default Java version on your Windows 10 machine. This process involves downloading the desired version, installing it, and then updating system environment variables.

Step 1: Download the Desired Java Version

First, download the Java version you need from the official Oracle website or any other trusted source.

Make sure you choose the correct version for your system (32-bit or 64-bit). Save the installer to a location you can easily access.

Step 2: Install the Java Version

Run the downloaded installer and follow the on-screen instructions to install the new Java version.

The installation process is straightforward. Just keep clicking "Next" and eventually "Finish." Make a note of the installation directory.

Step 3: Open System Environment Variables

Press Win + S, type "Environment Variables," and select "Edit the system environment variables."

This will open the System Properties window. Click on the "Environment Variables…" button in the lower-right corner.

Step 4: Edit the JAVA_HOME Variable

In the Environment Variables window, click "New" under System variables. Enter JAVA_HOME as the variable name and the path to the new Java installation as the variable value.

This step sets the new Java version as the default Java for your system. Make sure the path is correct.

Step 5: Update the PATH Variable

Find the PATH variable in the System variables section and click "Edit." Add %JAVA_HOME%bin to the list of paths.

This tells the system where to find the Java executable. Make sure it’s placed at the beginning of the list for priority.

Step 6: Verify the Java Version

Open Command Prompt and type java -version to verify that the new Java version is now the default.

If everything is set up correctly, you should see the new version number displayed. If not, double-check your environment variables.

After completing these steps, your system will use the new Java version by default. You can always switch back or change to another version using the same steps.

Tips for Changing Java Version in Windows 10

• Backup Your System: Always create a system restore point before making changes to system environment variables.
• Use Version Managers: Tools like jEnv can help manage multiple Java versions easily.
• Check Compatibility: Make sure the new Java version is compatible with your applications.
• Uninstall Old Versions: Remove older Java versions if you don’t need them to free up space.
• Environmental Variables: Double-check your environment variables to ensure they are typed correctly.

Frequently Asked Questions

What is JAVA_HOME?

JAVA_HOME is an environment variable that points to the directory where Java is installed. It’s used by various applications to locate the Java runtime.

Can I have multiple Java versions on Windows 10?

Yes, you can install multiple Java versions, but you need to update the JAVA_HOME and PATH variables to switch between them.

How do I uninstall an old Java version?

You can uninstall an old Java version through the Control Panel under "Programs and Features."

Why isn’t my new Java version recognized?

Ensure the new Java path is correctly set in the JAVA_HOME and PATH variables, and that they are placed at the beginning of the PATH list.

Do I need administrative rights to change Java versions?

Yes, you typically need administrative rights to modify system environment variables.

Summary

1. Download the desired Java version.
2. Install the Java version.
3. Open System Environment Variables.
4. Edit the JAVA_HOME variable.
5. Update the PATH variable.
6. Verify the Java version.

Conclusion

Changing the Java version in Windows 10 is a straightforward process, but it requires careful attention to detail. By following the steps outlined above, you can switch between different Java versions with ease. This is particularly useful for developers who need specific Java versions for different projects.

Remember, always double-check your environment variables to avoid any mistakes. Feel free to explore tools like version managers if you frequently switch between Java versions. Keep your system and projects running smoothly by staying up-to-date with the latest Java updates and best practices. Happy coding!